Regardless of if the website takes it down automatically, it's not fair use and therefore would be against copyright law (at least in the US)

Click to expand...

Well I tried my luck, posted a few videos with audio soundtrack, they went through just fine.

Today I got an email from Instagram that one of my videos has been removed so I'm not going to do this anymore:

We've removed the video you posted at 6:24 AM on June 14, 2019 because it included the following content:

XeDoVN.BimMedia by

If you have permission to share everything in the video including the audio, like the soundtrack or music, you can appeal the removal and have your video re-posted. Remember that people should only post videos they have the right to share.